| DOI: | 10.1002/2014GL062658
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| 论文题名: | Swarm equatorial electric field chain: First results |
| 作者: | Alken P.; Maus S.; Chulliat A.; Vigneron P.; Sirol O.; Hulot G.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8979
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| EISSN: | 1944-8710
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| 出版年: | 2015
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| 卷: | 42, 期:3 | | 起始页码: | 673
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| 结束页码: | 680
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| 语种: | 英语
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| 英文关键词: | EEF
; electric field
; electrojet
; ionosphere
; Swarm
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| Scopus关键词: | Atmospheric electricity
; Chains
; Digital storage
; E region
; Electric fields
; Ionosphere
; Ionospheric measurement
; Magnetometers
; Orbits
; Satellites
; EEF
; electrojet
; Equatorial electrojet
; Horizontal fields
; Independent measurement
; Longitudinal gradients
; Polar-orbiting satellites
; Swarm
; Electric drives
; algorithm
; atmospheric electricity
; electric field
; electrojet
; ionosphere
; magnetometer
; radar
; Jicamarca
; Lima [Peru]
; Peru
|
| 英文摘要: | The eastward equatorial electric field (EEF) in the E region ionosphere drives many important phenomena at low latitudes. We developed a method of estimating the EEF from magnetometer measurements of near-polar orbiting satellites as they cross the magnetic equator, by recovering a clean signal of the equatorial electrojet current and modeling the observed current to determine the electric field present during the satellite pass. This algorithm is now implemented as an official Level-2 Swarm product. Here we present first results of EEF estimates from nearly a year of Swarm data. We find excellent agreement with independent measurements from the ground-based coherent scatter radar at Jicamarca, Peru, as well as horizontal field measurements from the West African Magnetometer Network magnetic observatory chain. We also calculate longitudinal gradients of EEF measurements made by the A and C lower satellite pair and find gradients up to about 0.05 mV/m/deg with significant longitudinal variability. © 2015 The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924956774&doi=10.1002%2f2014GL062658&partnerID=40&md5=084f9aa1b6715fb130d04a059b0cfc17
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8595
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO, United States
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| Recommended Citation: | |
Alken P.,Maus S.,Chulliat A.,et al. Swarm equatorial electric field chain: First results[J]. Geophysical Research Letters,2015-01-01,42(3).
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